Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 970 [Rate centres in NPA 970] [Dial plan for NPA 970]

NXX: 561

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
970-561 A Windsor CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
970-561 0 Windsor CO DNVRCO26XUX  516J TON80 COMMUNICATIONS, LLC 656   2021-10-30   
970-561 1 Windsor CO   515J IP HORIZON LLC 656   2022-04-29   
970-561 2 Windsor CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2023-10-14   
970-561 3 Windsor CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2023-10-14   
970-561 4 Windsor CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2023-10-14   
970-561 6 Windsor CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2021-10-01   
970-561 7 Windsor CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2019-08-23   
970-561 8 Windsor CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2021-10-01   
970-561 9 Windsor CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2023-09-08   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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